SA5783NM
Fabrication of Onboard Systems Model 7 CROPHAWK spray flow measuring system. Held by Onboard Systems International, which holds 51 approved modifications in all. Last revised October 7, 2021. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Allied Ag Cat Productions Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Centerpointe Aerospace Inc.; Polskie Zaklady Lotnieze Spolka zo.o; Thrush Aircraft Inc.
- Models
- G-164A, S-58A, S-58B, S-58BT, S-58C, S-58D, S-58DT, S-58E, S-58ET, S-58F, S-58FT, S-58G, S-58H, S-58HT, S-58J, S-58JT, PZL M18, S-2R
- Type certificates
- 1A16, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, 1H11, A47EU, A4SW
- On this site
- Ag-Cat Corporation G-164 5 registered
Sikorsky S-58 25 registered
Thrush Aircraft Inc S-2 102 registered - The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 8, 2026.